electrovate - students.iitk.ac.in
TRANSCRIPT
ELECTROVATEAnurag DwivediNikhil Gupta Rudra Pratap Suman
What is Electrovate?
An Competition
Innovation
Basic Circuiting
Debugging
Problem Statement
Lets Recall last Lecture?
Designing a Digital Watch
Electronics
• Digital
• Analog
Digital Electronics
• Similar to switches• Consists of only two states• Low corresponds to 0V• High corresponds to 5V
Binary Number System
Clock Pulse
• Clock has 2 components :-
• Rising Edge
• Falling Edge
• CLK
Basic Tools In Circuit
How do we Count?
4029 counter
4029Binary Output
CLK
How to generate Clock ?
555 : Astable Mode
555Astable Mode
Output
Generates Clock pulses continuously
555 : Monostable Mode
555Monostable Mode
Output
Generates Clock pulse when triggered
Trigger
Display
7 Segment Display
4029 ??
4 bits 7 LEDs
4029 7447
4 bits 7 LEDs
Final Circuit
555Astable
4029 7447
Logic Gates
And Gate(4081)
INPUT OUTPUT
A B A AND B
0 0 0
0 1 0
1 0 0
1 1 1
Truth Table(A.B)
OR Gate(4071)
INPUT OUTPUT
A B A AND B
0 0 0
0 1 1
1 0 1
1 1 1
Truth Table(A+B)
NOT Gate(4069)Truth Table(A)
INPUT OUTPUT
A NOT A
0 1
1 0
Other gates
• NAND – Not of ANAND• NOR- Not of OR
Xor Gate(4070)Truth Table(A B)
INPUT OUTPUT
A B A AND B
0 0 0
0 1 1
1 0 1
1 1 0
Multiplexer(MUX)And Demultiplexer(DeMux)
Multiplexer
• Multiple input, one output• A single input line is connected electrically to the output• The selection of the input line is done via separate input
Multiplexer
Multiplexer
What do we mean by “Electrical”?
• Connection is analog, not digital• Any value of voltage is copied to output, and any
input current is transmitted to the output• It is as if the input and output have been shorted
by a wire
What do we mean by “Electrical”?
Demultiplexer
• Opposite of multiplexing• Multiple output, single input• Input is electrically connected to one of the
output lines• Selection of output line is done via separate
input
Demultiplexer
What’s the difference?
• Since the connection is electrical, same IC can act as multiplexer as well as demultiplexer
• We call this Mux-Demux• In particular, the above IC is 4052 – a 4 * 1 Mux-
Demux• 4051- 8 * 1 Mux-Demux
Other considerations
• Electrical connection is not perfect• Unconnected pins are left floating
Problem Statement(Roulette)
Problem Statement(Roulette)
Extra features2 Led at a Time
Extra featuresSpeed using LDR
What do you need to know?
• All information is available at the Electrovate site: http://students.iitk.ac.in/eclub/electrovate/
Some rules
• Minimum 3 people per team, maximum 4• Maximum of 2 breadboards per team
COMPONENTS ISSUE: 12TH AUGUST
• 8:00 PM TO 10:00 PM AT ELECTRONICS CLUB IN HALL 3
Some Final Words
• Keep in contact with the secretaries in your hall – details are available at club website
• In case of any problem regarding your circuit, contact a secretary
• If the secretary can’t help you, or any other issue, contact the coordinators
Thank You
Website : students.iitk.ac.in/eclubElectrovate Website:-
http://students.iitk.ac.in/eclub/electrovate/FB Group : www.facebook.com/eclub.iitk
E-mail : [email protected]